The Nexus 9 is still a new device, but it's a Nexus, and that means developers are going to tinker with it. In order to flash ROMs and whatnot, you need a custom recovery. Now there is one for this device. An official build of TWRP is live, and it brings some changes that take into account Lollipop's new security measures.

Here's the changelog for TWRP 2.8.2.0.

Pull in all changes from Android 5.0 lollipop into TWRP

Add decrypt support for Android 5.0 lollipop encrypted partitions including automatic decrypt when the default_password is in use

Revert some changes to exFAT that were breaking exFAT support on some devices

Other minor fixes and updates

Installing TWRP on a Nexus device is pretty easy. All you need is ADB/fastboot on your computer and an unlocked bootloader. The image files are available on the TWRP site, but make sure you grab the newest one. Good luck and happy flashing.

Comments

Flashed via fastboot with no issues. Needs a theme, but otherwise great

usaff22

When will the updated TWRP come to the Nexus 5? I want to encrypt my phone, but TWRP doesn't support Lollipop encryption on the Nexus 5 yet...

BTW what happened to the kill switch that was supposed to be in Lollipop?

Alberto

Most likely it would come in Android device Manager option. So it would need gms update

usaff22

What? TWRP has absolutely nothing to do with Android Device Manager

Alberto

was talking about the kill switch

usaff22

Oh, ok sorry then. I hope so.

Larry Simpson

Lollipop, worst android release yet. N6 no tap to wake. Crappy build quality on the N9. Bugs, bugs, bugs, crappy game performance. Look at the bugs for each device, hello FRAGMENTATION. I won't even use it as a daily driver yet for my N7 http://forum.xda-developers.com/nexus-7-2013/general.This version of Android has been a major disappointment.

Alberto

Tap to wake is not a big deal. Do you even have nexus 6 or was going to buy one? Every software got bugs you can't stop them. Window, Mac, android, ios

PrDawg

Tap to wake was removed because with Ambient Display it was redundant. Could be added back in custom builds.